Outstanding Loans and Security Agreements (Tables)

12 Months Ended

Dec. 31, 2018

Debt Disclosure [Abstract]

Schedule of debt

The following is a summary of the Company’s debt as of December 31, 2018 (in thousands):

	Unpaid Principal Balance		Net Carrying Value						Unused Borrowing Capacity
			Current		Long- Term		Total
LIBOR + 4% term loan due November 2020	$	3,286	$	1,686	$	1,528	$	3,214	$	—
5% convertible promissory note due December 2020	33,104		—		34,706		34,706		—
6% convertible promissory notes due December 2020	296,233		—		263,284		263,284		—
10% notes due July 2024	100,000		7,000		88,555		95,555		—
Total recourse debt	432,623		8,686		388,073		396,759		—
5.22% senior secured term notes due March 2025	79,698		11,994		66,572		78,566		—
7.5% term loan due September 2028	40,538		2,200		34,119		36,319		—
LIBOR + 5.25% term loan due October 2020	24,723		827		23,089		23,916		—
6.07% senior secured notes due March 2030	83,457		2,469		79,868		82,337		—
LIBOR + 2.5% term loan due December 2021	125,456		3,672		119,712		123,384		—
Letters of Credit due December 2021	—		—		—		—		1,220
Total non-recourse debt	353,872		21,162		323,360		344,522		1,220
Total debt	$	786,495	$	29,848	$	711,433	$	741,281	$	1,220

The following is a summary of the Company’s debt as of December 31, 2017 (in thousands):

	Unpaid Principal Balance		Net Carrying Value						Unused Borrowing Capacity
			Current		Long- Term		Total
LIBOR + 4% term loan due November 2020	$	5,000	$	1,690	$	3,197	$	4,887	$	—
8% convertible promissory notes due December 2018	244,717		—		244,717		244,717		—
6% convertible promissory notes due December 2020	286,069		—		236,724		236,724		—
10% notes due July 2024	100,000		—		94,517		94,517		—
Total recourse debt	635,786		1,690		579,155		580,845		—
5.22% senior secured term notes due March 2025	91,086		11,389		78,175		89,564		—
7.5% term loan due September 2028	41,927		1,389		35,551		36,940		—
LIBOR + 5.25% term loan due October 2020	25,599		876		23,488		24,364		—
6.07% senior secured notes due March 2030	85,303		1,846		82,186		84,032		—
LIBOR + 2.5% term loan due December 2021	128,403		2,946		122,650		125,596		—
Letters of Credit due December 2021	—		—		—		—		1,784
Total non-recourse debt	372,318		18,446		342,050		360,496		1,784
Total debt	$	1,008,104	$	20,136	$	921,205	$	941,341	$	1,784

Schedule of repayment

The following table presents detail of the Company’s entire outstanding loan principal repayment schedule as of December 31, 2018 (in thousands):

2019	$	29,878
2020	391,060
2021	153,639
2022	40,059
2023	44,209
Thereafter	127,650
	$	786,495